Solved

string to acceptable filename

Posted on 1998-05-31
3
158 Views
Last Modified: 2010-04-06
I need a procedure RemoveInvalidFileCharacters(var Inputstring: string);
which substitutes invalid characters (that is for a Windows 95 filesystem)
by spaces.
e.g.   'TESTname' -> 'TESTname'
e.g.  'éééxamp^^^le' ->     '   xamp   le'
0
Comment
Question by:miauw
  • 2
3 Comments
 
LVL 1

Accepted Solution

by:
Edo082297 earned 100 total points
ID: 1349475
Hi Miauw,
  Here is your function. Note that Windows 95 will allow you to store filenames containing weird characters (other countries use these strange symbols; they even speak with them ;). You can also store filenames with special symbols like % and ^. You may not, however, use filenames that contain the following symbols: [\, /, :, *, ?, ", <, >, | ]. So, all we do is filter those out. If you want to block specific characters, you will have to add it to the filter list. Note that the function as it stands filters out some characters that are actually legal in a filename, but strange in the context of a filename (such as ^).

procedure TForm1.Button1Click(Sender: TObject);
begin
  Edit2.Text := RemoveInvalidFileCharacters(edit1.Text);
end;

function TForm1.RemoveInvalidFileCharacters(const AFileName : string): String;
var
  i : integer;
begin
  Result := AFileName;

  // access violation will occurr in first iteration of for loop with blank string
  if Length(AFileName) = 0 then
    Exit;

  for i := 0 to Length(AFileName) do
  begin
    if not (AFileName[i] in ['0'..'z'])
        or (AFileName[i] in ['\', '/', ':', '*', '?', '"', '<', '>', '|']) then
      Result[i] := ' '
  end;
end;

Regards,

Edo

0
 

Author Comment

by:miauw
ID: 1349476
Thanks, I was ready by now, but you answered the question before I could
delete it, so I will give you A: Excellent.
0
 
LVL 1

Expert Comment

by:Edo082297
ID: 1349477
Thanks, Miauw!
0

Featured Post

Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction The parallel port is a very commonly known port, it was widely used to connect a printer to the PC, if you look at the back of your computer, for those who don't have newer computers, there will be a port with 25 pins and a small print…
Have you ever had your Delphi form/application just hanging while waiting for data to load? This is the article to read if you want to learn some things about adding threads for data loading in the background. First, I'll setup a general applica…
Although Jacob Bernoulli (1654-1705) has been credited as the creator of "Binomial Distribution Table", Gottfried Leibniz (1646-1716) did his dissertation on the subject in 1666; Leibniz you may recall is the co-inventor of "Calculus" and beat Isaac…
Finds all prime numbers in a range requested and places them in a public primes() array. I've demostrated a template size of 30 (2 * 3 * 5) but larger templates can be built such 210  (2 * 3 * 5 * 7) or 2310  (2 * 3 * 5 * 7 * 11). The larger templa…

839 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question